Exergy 17-24 Chevrolet Duramax 6.6L L5P Denso HP4 Pump

The Exergy E04 10702 is a new Denso stock replacement injection pump for 2017-2025 Chevrolet and GMC Silverado/Sierra 2500HD/3500HD trucks with the 6.6L Duramax L5P engine. It addresses hard starts, low power, and rough idle. Built on the Denso HP4 platform, it's a brand-new unit (not remanufactured) with factory-matching fit, flow, and operating specs. All Exergy HP4 pumps feature upgraded internal bushings for enhanced resistance to low lubricity fuel, providing extended service life. This ensures clean, consistent injection for stock fueling demands and mild upgrades (tuning, intakes, exhaust). It's a direct replacement for GM part numbers 12678993, 12701094; Denso 294050-0701; Alliant Power AP54850, AP54851; and International 6040608C91. Installation requires no tuning changes, custom lines, or compatibility issues.